No, anything sweet, fruity, or otherwise food-like , even if no calories, can cause insulin release. Insulin stops you from burning body fat. https://www.ginstephens.com/all-blog-posts/does-a-clean-fast-really-matter
Stevia is a plant, it’s not artificial sweetener. It affects your blood sugar very little. You will find it in most supermarkets. Some artificial sweeteners can raise your blood sugars or have side effects in large quantities.